/*
 * Copyright 2017-2019 Allegro.pl
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { Duration } from "chronoshift";
import { Essence } from "../../models/essence/essence";
import { Timekeeper } from "../../models/timekeeper/timekeeper";

export default function timeFilterCanonicalLength(essence: Essence, timekeeper: Timekeeper): number {
  const currentTimeFilter = essence.currentTimeFilter(timekeeper);
  const { start, end } = currentTimeFilter.values.get(0);
  const currentTimeRange = new Duration(start, end, essence.timezone);
  return currentTimeRange.getCanonicalLength();
}
